浙江舟山市普陀区
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JHS-7双向无线电话
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产品特点
极端恶劣条件下8小时工作能力
可单手简便操作
高强度的设计可承受从 1米掉到地面的冲击
水密设计可适应各种操作环境
特殊的元件和材料可耐长久日晒
专门的技术可确保超过8小时的操作时间
采用高可靠的电子元件以确保整机的高可靠性
工作稳定
性能参数
| 标准 |
IMO Res.A.569(14)、A.605(15)
无线电章程附录18和19
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|
| 一般参数 | 操作信道 |
CH16（156.800MHz）
CH6（156.300MHz）
CH13（156.650MHz）
CH15（156.750MHz）
CH17（156.850MHz）
CH67（156.375MHz）
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| 可自由选择的信道 | 从156.300到156.875频率范围内可选择7个单工信道 | |
| 信道间隔 | 25KHz | |
| 信道选择 | 触点式选择开关选择CH16信道，其它信道使用旋转旋钮进行选择 | |
| 频率稳定度 | 在10ppm（TX）范围内 | |
| 通讯模式 | 单工 | |
| 发射模式 | F3E/G3E | |
| 天线类型 | 垂直全方向全封装天线 | |
| 操作时间 | 在1：9的负载周期工作时间大于8小时 | |
| 内置电池 | 7.2VDC 1000mAH | |
| 使用环境温度 | -20℃~+55℃ | |
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发射单元
|
有效发射功率 | 0.25到1W |
| 调制类型 | 易变的电抗器频率调制 | |
| 频偏 | ±5KHz最大 | |
| 预加重 | 6dB(+1dB、-3dB)/八度倍频 | |
| AF谐波失真 | 优于10% | |
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接收单元
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AF输出功率 | 200mW或10%THD |
| 去加重 | -6dB(+1dB、-3dB)/八度倍频 | |
| 最大可用的灵敏度 | -6dBμV或低于（20dB静音） | |
| 选择性 |
12KHz或更优在6dB变细
25KHz或更小在70dB变细
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|
| 频率稳定度 | 优于0.001% |
【GENERAL】
The JHS-7 is of heavy duty design for use maritime severe conditions and equipped with 13 single-frequency voice channels including Channel 16 (156.800 MHz), providing 0.25 to one watt of transmitted power. This equipment can be used as an on-board communication equipment.
【FEATURES】
• Thirteen Operating Channels
Thirteen single-frequency voice channels are provided including Channel 16 for calling and safety which can also be selected easily by an independent switch.
• Heavy Duty Design
The JHS-7 is designed to operate normally for 8 hours in extremely severe operating conditions.
• Single-Handed Operation
The control knobs and switches are in easy-to-operate arrangement to ensure single-handed operation.
• Mechanical Ruggedness
The JHS-7 is designed to withstand a 1-m drop onto a hard surface.
• Watertightness
The JHS-7 is designed to be waterproof to ensure its normal use even in rainy or water splash conditions.
• Sunlight resistance
If the JHS-7 is long exposed to the sunlight, it will not be damaged because it is composed of specially selected components and materials.
• Low Power Consumption
The JHS-7 is designed to minimize its power consumption and to maximize its operating time. Its sleep mode technique ensures more than 8 hours of its operation time.
• High Reliability
Highly reliable ICs, transistors, LEDs and other surface-mount devices are used.
【SPECS】
【STANDARD COMPONENTS】
GENERAL
Standard
IMO Res.A.569(14), A.605(15);
Radio Regulations Appendices 18 and 19
Operating channels
CH 16 (156.800 MHz)
CH 6 (156.300 MHz)
CH 13 (156.650 MHz)
CH 15 (156.750 MHz)
CH 17 (156.850 MHz)
CH 67 (156.375 MHz)
Optional channles
Seven simplex channels selectable form a range of 156.300 to 156.875 MHz
Channel spacing:
25 kHz
Channel selection
CH 16 - by one-touch selector switch
Other CHs - by a rotary dial knob
Local oscillator
PLL frequency synthesizer
Frequency stability
Within 10 ppm (TX)
Communication mode
Simplex
Class of emission
G3E/F3E
Type of antenna
Vertical, omnidirectional type integrated antenna
Operating time
More than 8 hours at the duty cycle of 1:9
Integrated battery
7.2 VDC, 1000 mAH
Operating temperature
-20degC to +55degC
TRANSMITTER
Effective radiated power:
0.25 to one watt
Type of modulation
Variable reactance frequency modulation
Frequency deviation
±5 kHz max.
Pre-emphasis
6dB (+1 dB, -3 dB)/octave
AF harmonic distortion
Better than 10%
RECEIVER
Receiving system
Double superheterodyne
AF output power
200mW or more at 10% THD
De-emphasis
-6 dB (+1 dB -3 dB)/octave
Maximum usablesensitivity
+6 dBuV or less (20 dB noise quieting)
Selectivity
12kHz or more at 6dB attenuation
25kHz or less at 70dB attenuation
Frequency Satbility
Better than 0.001%
Spurious response rejection
70 dB or more
Intermodulation response
70 dB or more
Blocking
90 dBuV or more
【OPTIONS】
TWO-WAY VHF RADIOTELEPHONE
ON-BOARD COMMUNICATION EQUIPMENT
MODEL : JHS-7
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